<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>HTML的基本骨架</title>
</head>
<body>
    <h1>head 1</h1>
    <h2>head 2</h2>
    <h3>head 3</h3>
    <h4>head 4</h4>
    <h5>head 5</h5>
    <h6>head 6</h6>
</body>
</html>